【单选题】
The administrator must back up a vCenter HA deployment. Which component must be backed up?___
A. Passive node
B. Witness node
C. External database
D. Active node
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答案
D
解析
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相关试题
【单选题】
What is the supported protocol to perform remote L3 traffic monitoring in vSphere 6.5?___
A. VXLAN
B. ERSPAN
C. RSPAN
D. SPAN
【单选题】
What are the minimum hardware requirements for a Windows vCenter Server with embedded PSC that manages a “Small” environment?___
A. 2vCPUs, 16 GB RAM
B. 4 vCPUs, 16 GB RAM
C. 2 vCPUs, 10 GB RAM
D. 4 vCPUs, 10 GB RAM
【单选题】
Which port is used for communication between ESXi and vSphere Data protection?___
A. 80
B. 443
C. 902
D. 22
【单选题】
What can prevent Storage DRS from functioning on a datastore?___
A. The datastore is configured for Virtual Machine Swapfile location.
B. The datastore is shared across multiple datacenters.
C. The datastore is connected to a host that is running Storage I/O Control.
D. Storage DRS advanced option IgnoreAffinityRulesForMaintenance is set to 1.
【单选题】
When troubleshooting VMware vCenter Server issues, when logging level provides maximum detail?___
A. Verbose
B. Trivia
C. Info
D. Error
【单选题】
What new feature is introduced in NFS 4.1 on ESXi 6.5?___
A. IPv6
B. KRB5i
C. AUTH_SYS
D. Storage DRS
【单选题】
What configuration option would ensure that a virtual NUMA topology is defined on VMs having more than eight virtual CPUs?___
A. cupid.coresPerSocket
B. numa.vcpu.followcorespersocket
C. numa.vcpu.maxPerVirtualNode
D. numa.vcpu.min
【单选题】
What is the minimum disk space required to deploy vSphere Data Protection (VDP) with 8 TB configuration?___
A. 4 TB
B. 16 TB
C. 8 TB
D. 12 TB
【单选题】
What advanced option for vSphere HA defines a maximum number of reset attempts by VMCP for a virtual machine?___
A. das.maxterminates
B. das.isolationshutdowntimeout
C. das.maxresets
D. fdm.isolationpolicydelaysec
【单选题】
What vSphere technology enables the administrator to ensure consistent configuration at scale?___
A. PowerCLI
B. Host Profiles
C. esxcli
D. vSphere Web Client
【单选题】
Which port is used for vSphere HA agent-to-agent communication?___
A. 443
B. 8182
C. 22
D. 902
【单选题】
Which log file would assist in identifying an issue that occurred during the database export phase of a vCenter Server upgrade process?___
A. vcdb_import.out
B. export.json
C. export-upgrade-runner.log
D. vcdb_export.out
【单选题】
Bidirectional CHAP is support by which storage initiator?___
A. software FCoE HBA
B. Fibre Channel HBA
C. independent hardware iSCSI HBA
D. dependent hardware iSCSI HBA
【单选题】
What is a pool of raw storage capacity that a storage system can provide to Virtual Volumes?___
A. protocol endpoint
B. storage container
C. storage provider
D. datastore
【单选题】
vSphere 6.5 DRS is now Network-Aware. Based on network utilization, when will DRS balance VMs?___
A. DRS will balance VMs when a network resource pool is configured for VMs.
B. DRS will balance VMs when Network I/O Control is enabled.
C. DRS will place VMs on initial boot for hosts that have network utilization lower that the threshold.
D. DRS will vMotion VMs when network utilization is higher than the threshold on a particular host.
【单选题】
A scripted upgrade of ESXi fails due to an incorrect parameter in the upgrade script. What file must the administrator modify to correct the problem?___
A. vmreconfig.pl
B. hostinfo.pl
C. ks.cfg
D. boot.cfg
【单选题】
A VM folder contains VM1 and VM2. Group A has permission to power on virtual machines, defined on the VM folder and its children. Group B has permission to power off virtual machine VM2. If a user is a member of group A and B, what action can the user perform?___
A. Suspend VM2.
B. Power off VM1.
C. Power on and power off VM1.
D. Power on and power off VM2.
【单选题】
The networking team has requested to have a dedicated network for iSCSI traffic. This task has been assigned to the vSphere Administrator. What is the VMware-recommended way to accomplish this?___
A. Configure Static Routes on each ESXi Server.
B. Configure the right subnet.
C. Create a custom IP Stack.
D. Define a dedicated gateway for the iSCSI vmkernel.
【单选题】
To prevent possible failures or issues during a vSphere upgrade, which component should be upgraded first?___
A. ESXi Hosts
B. virtual machines
C. datastores
D. vCenter Server
【单选题】
What is the command for updating an ESXi host?___
A. esxcli software vib update –d /vmfs/volumes/Datastore/DirectoryName/PatchName.zip
B. esxupdate software update –d”/vmfs/volumes/Datastore/DirectoryName/PatchName.zip”
C. esxcli software update –d “/vmfs/volumes/Datastore/DirectoryName/PatchName.zip”
D. esxupdate software vib update –d /vmfs/volumes/Datastore/DirectoryName/PatchName.zip
【单选题】
A vSphere Administrator would like to identify which physical NUMA node their virtual machine is currently residing on. What esxtop metric would provide this information?___
A. GST_ND[x]
B. OVD_ND[x]
C. NRMEM
D. NHN
【单选题】
How can a vSphere administrator ensure that two virtual machines never run on the same datastore in a datastore cluster, while permitting the VMs to be load-balanced?___
A. Use an Intra-VM Anti-Affinity Rule.
B. Configure a storage DRS VM override.
C. Disable storage
D. RS for the VMs.
【单选题】
What is the VMware-recommended way to move a physical adapter out of Network I/O Control’s scope?___
A. Set the teaming policy to “Route Based on Physical NIC Load.”
B. Add the vmnic to the Net.NetNiocAllowOverCommit parameter in Advanced System Settings.
C. Add the vmnic to the Net.IOControlPnicOptOut parameter in Advanced System Settings.
D. Move the vmnic to a different vmUplink port on the Distributed Switch.
【单选题】
A VM folder contains VM1 and VM2. Group A has permission to power on virtual machines, defined on the VM folder and its children. Group B has permission to power off virtual machines, defined on the VM folder and its children. If a user is a member of Groups A and B, what will be the user’s effective permission on VM1 and VM2?___
A. Power on
B. Power off.
C. Power on and Power off.
D. Reset.
【单选题】
Group 1 is granted console interaction on a VM folder. User 1 is granted no console interaction on the same VM folder. What will be the outcome if User 1 tries to access the console of a virtual machine?___
A. User 1 will not be able to access the virtual machines in the VM folder.
B. User 1 will not have access to the virtual machine console.
C. User 1 will have access to the virtual machine console.
D. User 1 will have console access only via the vSphere Web Client.
【单选题】
Which statement is true regarding the use of VMFS3 datastores with vSphere 6.5?___
A. VMFS3 datastores can be used but not created.
B. VMFS3 datastores can be neither used nor created.
C. VMFS3 datastores will be present but unmounted.
D. VMFS3 datastores can be created and used.
【单选题】
In the Exhibit, each VM has a 1GHz non-expandable reservation. If all VMs are powered on in sequence, what would be the outcome?___
A. VM4 cannot be powered on.
B. VM5 cannot be powered on.
C. VM6 cannot be powered on.
D. VM3 cannot be powered on.
【单选题】
vSphere 6.5 introduced MAClearning capabilities for VMware’s virtual switches. What three benefits will it provide? (Choose three.)___
A. Reduced memory consumption.
B. Reduced consumption of extra CPU cycles.
C. Increased network throughput.
D. Prevent packet flooding inside the vSwitch.
【单选题】
What is the default pathing policy for most active-active arrays?___
A. Fixed
B. Most Recently Used
C. Dynamic
D. isk Morroring
【单选题】
Which command will show the iSCSI sessions on a ESXi 6.5 host?___
A. esxcli storage iscsi session get
B. esxcli iscsi session get
C. esxcli storage iscsi session
D. esxcli iscsi session list
【单选题】
Which of the following is not a parameter for traffic filtering or marking?___
A. virtual port ID
B. Protocol
C. Traffic Direction
D. DSCP value
E. Traffic redirection
【单选题】
A vSphere administrator wants to enable a virtual machine with Secure Boot, but in VM setting, Secure Boot option was not found under Boot Options. What could be the cause?___
A. The virtual hardware is not compatible.
B. The virtual machine has missing drivers.
C. The virtual machine OS does not support secure boot.
D. VMware Tools is not upgraded.
【单选题】
A virtual machine is connected on a distributed port group where the average bandwidth configured in the traffic shaping policy is 100 Mbps. The VM network adapter is configured with a reservation of 200 Mbps. What is the VM’s effective bandwidth?___
A. 200 Mbps
B. 100 Mbps
C. 150 Mbps
D. 400 Mbps
【多选题】
What are two reasons why a datastore in a Storage DRS cluster cannot enter maintenance mode?(Choose two.)___
A. Storage latency is too high to allow Storage DRS initiate Storage vMotion.
B. Storage DRS is configured for a VMFS3 datastore.
C. Storage
D. RS is disabled on the virtual disk.
【多选题】
What two methods are used to configure VMware vSphere Storage I/O Control shares and limits? (Choose two.)___
A. Assign shares and limits to VM virtual disks.
B. Assign shares and limits to datastores.
C. Assign shares and limits to Storage (DRS) clusters.
D. Assign shares and limits using VM storage policies.
【多选题】
ESXi 6.5 introduces VMFS6, which supports both 512e and 512n devices. What three configurations are supported when using these devices? (Choose three.) ___
A. Hosts with both 512e and 512n devices.
B. Storage vMotion between both 512e and 512n devices.
C. Datastore Extents spanned between both 512e and 512n devices.
D. Storage DRS clusters containing only both 512e and 512n devices.
【多选题】
A vSphere Administrator observes that the Primary VM configured with Fault Tolerance is executing slowly. After further investigation, it is determined that the Secondary VM is on an overcommitted ESXi host. What two methods will correct the problem? (Choose two.)___
A. Use Storage vMotion to migrate the Secondary VM to another datastore.
B. Use vMotion to migrate the Secondary VM to a different ESXi host.
C. Configure a CPU limit on the Primary VM which will also apply to the Secondary VM.
D. Turn off and turn on FT in order to recreate the Secondary VM on a different datastore.
【多选题】
Which two features require the use of Host Profiles? (Choose two.)___
A. Host Customizations
B. shared storage
C. Auto
D. eploy
【多选题】
What three processes on the vCenter Server Appliance (VCSA) does“vmware-watchdog monitor? (Choose three.) ___
A. vmware-eam
B. vmcad
C. vmware-vpostgres
D. vpxd
E. vsan-health
【多选题】
What three processes on the vCenter Server Appliance (VCSA) does“vmware-watchdog monitor? (Choose three.) ___
A. vmware-eam
B. vmcad
C. vmware-vpostgres
D. vpxd
E. vsan-health
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【单选题】
司机在出车检车过程中首先做到确认股道、___、及触网送电情况。
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B. 线路
C. 列车号
D. 人员
【单选题】
检查列车内部时:车内装饰清洁,无损坏。各应急开关位置正确,___无遗失。
A. 扶手
B. 座椅
C. 挡风屏
D. 消防设施
【单选题】
在正线信号微机联锁设备故障的情况下,正线列车采用___组织行车。
A. 电话闭塞法
B. 电话联系法
C. 时间间隔法
D. 路票
【单选题】
在正线信号微机联锁设备故障的情况下采用电话闭塞法组织行车,闭塞区内列车凭路票采用___模式驾驶。
A. RM(限制人工驾驶)
B. URM/NRM(非限制人工驾驶)
C. SM(ATP监督下人工驾驶)
D. ATO(列车自动驾驶)
【单选题】
___不属于路票的六个方面的要素之一。
A. 办理时间
B. 电话记录号码
C. 日期
D. 车次
【单选题】
无ATP保护的车辆调试时,列车距终点150米时速度不得大于___
A. 15KM/h
B. 20KM/h
C. 25KM/h
D. 30KM/h
【单选题】
当车速80km/h(含)-90km/h:列车行至距终端___米时,必须进行全常用制动措施,制动后发现异常必须拍下紧急制动按钮,施加紧急制动。
A. 400米
B. 450米
C. 500米
D. 550米
【单选题】
调试作业中原则上只安排一名调试司机,如需安排两名及以上司机共同担任调试任务时,调试需求单位需提前___个工作日向乘务中心提出申请。
A. 1
B. 2
C. 5
D. 7
【单选题】
试车线调试做80km/h以上测试,每次提速___进行高速测试。
A. 3KM/h
B. 5KM/h
C. 10KM/h
D. 25KM/h
【单选题】
正线调试列车与前方末班载客列车保持___的安全距离。
A. 站1区间以上
B. 2站2区间以上
C. 3站3区间以上
D. 4站4区间以上
【单选题】
雨雪冰冻天气,轨面湿滑时禁止进行___以上调试。
A. 60km/h
B. 65km/h
C. 55km/h
D. 50km/h
【单选题】
无ATP保护的车辆调试时,遇特殊情况必须进入100m时要停车后以不超过___的速度进入,确保安全。
A. 5km/h
B. 10km/h
C. 15km/h
D. 20km/h
【单选题】
地铁线路就其在运营中的作用分类,不包括___。
A. 正线
B. 折返线
C. 车场线
D. 辅助线
【单选题】
列车运行图是用___方法,表示列车运行状态的一种图解形式。
A. 曲线原理
B. 直线原理
C. 定位原理
D. 坐标原理
【单选题】
车轮与钢轨顶面接触的外周面称为___。
A. 踏面
B. 轮箍
C. 轮缘
D. 轮辋
【单选题】
地铁车辆磨损后的车轮直径限值为___。
A. 740mm
B. 770mm
C. 800mm
D. 840mm
【单选题】
南京地铁列车被唤醒,只有蓄电池在供电,受电弓没有升起,司机没有进行任何操作,___分钟后有一继电器使列车又进入睡眠状态。
A. 2
B. 10
C. 45
D. 50
【单选题】
南京地铁列车司机室操纵台上双针压力表可同时测量2个压力,分别是___。
A. 主风缸、空簧缸
B. 空簧缸、制动缸
C. 主风缸、制动缸
D. 主风缸、高压缸
【单选题】
南京地铁列车模式开关(MS)共有___个位置。
A. 7
B. 6
C. 5
D. 4
【单选题】
列车唤醒后,在未激活的司机室里,哪项功能未被锁闭。___
A. 停放制动按钮
B. 模式开关
C. 开门按钮
D. 蘑菇按钮
【单选题】
列车车体的防火要求严格,故多采用___的材料。
A. 无毒
B. 防火阻燃
C. 低烟低毒
D. 防火阻燃、低烟低毒
【单选题】
地铁列车车体按使用的材质一般可分为___。
A. 铝合金车体、耐侯钢车体和不锈钢车体
B. 耐侯钢车体和不锈钢车体
C. 铝合金车体、耐侯钢车体
D. 铝合金车体、不锈钢车体
【单选题】
列车车体按制造工艺又可分为___结构。
A. 焊接、铆接或混合连接
B. 焊接、铆接
C. 焊接或混合连接
D. 铆接或混合连接
【单选题】
司机室通过司机室块隔离墙与客室分开。在司机室的左边安装了___,供紧急情况疏散乘客。
A. 应急逃生门
B. 客室门
C. 设备柜门
D. 信号柜
【单选题】
紧急制动只采用___制动,而且制动命令是不可更改的。
A. 再生制动
B. 电阻制动
C. 空气制动
D. 停放制动
【单选题】
最大网压再生制动时,网压限制在___V。
A. 1900
B. 1800
C. 1600
D. 1500
【单选题】
站台门由滑动门、固定门、应急门、___组合而成。
A. 司机室门
B. 客室门
C. 安全门
D. 端门
【单选题】
辅助逆变器SC通过车顶___或车间电源插座和一条高压母线获得DC1500V电源。
A. 受电弓
B. 空调
C. 车间电源
D. 接触器
【单选题】
当一个蓄电池的___不工作时,相应的电池没有充电电流。
A. 充电器
B. 电阻
C. 电容
D. 二极管
【单选题】
当牵引控制电子装置探测到车轮出现空转时,___将减小,直到空转现象消除。
A. 牵引力
B. 摩擦制动
C. 电阻制动
D. 制动力
【单选题】
主风缸的容量是___L 。
A. 90
B. 100
C. 110
D. 120
【单选题】
主风管压力正常范围___bar。
A. 7.5-8.4
B. 8.4-9.5
C. 9.5-10.3
D. 10.3
【单选题】
主空压机启动压力___bar。
A. 7
B. 8.4
C. 9.5
D. 10.3
【单选题】
主空压机停止压力___bar。
A. 7.5
B. 8.4
C. 9.5
D. 10.3
【单选题】
辅助空压机启动要求压力___bar。
A. 7.5
B. 8.4
C. 9.5
D. 10.3
【单选题】
摩擦制动是将物体的动能转化为热能,从而产生制动作用,通常可以分为闸瓦制动、___、磁轨制动、液力制动。
A. 再生制动
B. 电阻制动
C. 盘形制动
D. 涡流制动
【单选题】
限制向后(RMR)模式车辆限速___km/h。
A. 18
B. 20
C. 10
D. 80
【单选题】
限制向前(RMF)模式车辆限速___km/h。
A. 10
B. 15
C. 20
D. 25
【单选题】
低电压由辅助逆变器输出和___提供。
A. 接触网
B. 蓄电池
C. 牵引逆变器
D. 车间电源
【单选题】
电制动包括:再生制动和___制动。
A. 回馈
B. 摩擦
C. 空气
D. 电阻